It's Week 15 in Fantasy Football, which means single elimination has begun in most leagues. Gone are the long-term planning stages, scenic routes, and wait-and-sees. This week, it's about the here and now, because there is no guarantee for next week.It's time for perhaps the biggest roster overhaul since you drafted your team. To help with the transition, Sportskeeda has put together a handy list of running backs to remove and add heading into Week 15.Fantasy Football RBs to drop, including Alvin Kamara:Jacory Croskey-Merritt at Washington Commanders v Minnesota Vikings - NFL 2025 - Source: Getty#10 - Rhamondre Stevenson#9 - Nick Chubb#8 - Bhayshul Tuten#7 - Jordan Mason#6 - Emanuel Wilson#5 - Emari Demercado#4 - Sean Tucker#3 - Tyjae Spears#2 - Alvin Kamara#1 - Jacory Croskey-MerrittAt this point, it's time to move on from Alvin Kamara. It has been a disastrous season for the New Orleans Saints' bellcow, all-purpose back. With his health situation tentative at best, and riding an almost entirely irrelevant season in fantasy football, you have more to gain by adding a flashy waiver wire option.Emanuel Wilson had an explosive outing in his brief showing in relief of Josh Jacobs, but if you need the roster spot, you should drop him. Saving the roster spot in case Jacobs suffers another injury at the cost of a less-than-fully optimized starter doesn't make sense.If you haven't done so, you can also dump Jacory Croskey-Merritt from your fantasy football bench. He has lost the starting job to Chris Rodriguez Jr., making him irrelevant for fantasy football.Fantasy Football RBs to add, including Bam Knight:Jaylen Wright at Miami Dolphins v New York Jets - NFL 2025 - Source: Getty#10 - Zach Charbonnet#9 - Chuba Hubbard#8 - Kimani Vidal#7 - Kareem Hunt#6 - Bam Knight#5 - Devin Singletary#4 - Blake Corum#3 - Chris Rodriguez Jr.#2 - Jaylen Wright#1 - Kyle MonangaiThe Los Angeles Rams came into the year hinting at a possible change in the running back room after drafting rookie Jarquez Hunter with a fourth-round pick. While Hunter hasn't seen the carries, Blake Corum has. Don't consider his breakout game against the Arizona Cardinals to be the last time he sees double-digit carries. In a pinch, go with Corum.Devin Singletary has seen his production spike in recent weeks, earning three touchdowns in his last three games. With Tyrone Tracy Jr. dealing with a hip injury, Singletary could get another run against the Washington Commanders.Another running back to consider is Jaylen Wright, the backup in Miami. Wright is coming off a game in which he earned 24 carries for 107 yards and a touchdown. De'Von Achane's injury was the reason for the boost, but he's worth adding to your fantasy football team in case Achane has a setback that would keep him out of Week 15 or Week 16.